[EN] PROCESS FOR PREPARATION OF BOSENTAN<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE BOSENTAN
申请人:CADILA HEALTHCARE LTD
公开号:WO2010032261A1
公开(公告)日:2010-03-25
The present invention provides improved processes for preparing Bosentan. The present invention provides novel intermediates like 4,6-dihydroxy-5-(2-methoxy phenoxy)[2,2'] bipyrimidine of formula (II) and N-(6-Chloro-5-(2- ethoxyphenoxy)[2,2'-bipyrimidinyl]-4-t-butyl benzenesulfonamide cesium salt and process for preparation thereof. The invention also disclosed novel polymorphic form of the intermediates.
本发明提供了改进的制备波生坦的方法。本发明提供了如式(II)的4,6-二羟基-5-(2-甲氧基苯氧基)[2,2']双嘧啶等新型中间体,以及N-(6-氯-5-(2-乙氧基苯氧基)[2,2'-双嘧啶基]-4-叔丁基苯磺酰胺铯盐及其制备方法。该发明还揭示了中间体的新型多形态形式。